JPS56148730A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS56148730A JPS56148730A JP5209580A JP5209580A JPS56148730A JP S56148730 A JPS56148730 A JP S56148730A JP 5209580 A JP5209580 A JP 5209580A JP 5209580 A JP5209580 A JP 5209580A JP S56148730 A JPS56148730 A JP S56148730A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic powder
- covered
- anhydrosorbitol
- prepd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006247 magnetic powder Substances 0.000 abstract 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 abstract 3
- -1 fatty acid ester Chemical class 0.000 abstract 3
- 229910019142 PO4 Inorganic materials 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 235000014113 dietary fatty acids Nutrition 0.000 abstract 2
- 229930195729 fatty acid Natural products 0.000 abstract 2
- 239000000194 fatty acid Substances 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 2
- 239000010452 phosphate Substances 0.000 abstract 2
- 239000004848 polyfunctional curative Substances 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/712—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the surface treatment or coating of magnetic particles
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To improve recording and reproducing characteristics by forming a magnetic layer contg. the magnetic powder of which the surfaces are covered with a trisaturated fatty acid ester of anhydrosorbitol and a phosphate as well as a binder and a hardener. CONSTITUTION:The magnetic powder of which the surfaces are covered by adding 100pst.wt. magnetic powder to a methyl ethyl ketone soln. of 0.2-20pts.wt. a trisaturated fatty acid ester of anhydrosorbitol and 0.5-3pts.wt. a phosphate consisting of an alkoxylated higher alcohol or alkyl phenol, and adsorbing both of the above-described esters to the surface of the magnetic powders then taking out the magnetic powder and drying the same is prepd. The magnetic coating consisting of adding about 30pts. a binder resin (an urethane prepolymer and a vinyl chloridevinyl acetate copolymer, etc.) and about 9pts. hardener to this 100pts. covered magnetic powder is prepd. and this coating is coated on a substrate then dried, whereby the magnetic recording medium is obtained. In this way, the superior tape which is low in coefft. of dynamic friction, and does not cause degradation of characteristics owing to peeling of the magnetic powder and sticking on magnetic heads is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5209580A JPS56148730A (en) | 1980-04-18 | 1980-04-18 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5209580A JPS56148730A (en) | 1980-04-18 | 1980-04-18 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56148730A true JPS56148730A (en) | 1981-11-18 |
Family
ID=12905273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5209580A Pending JPS56148730A (en) | 1980-04-18 | 1980-04-18 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56148730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619831A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
-
1980
- 1980-04-18 JP JP5209580A patent/JPS56148730A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619831A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
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